/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/AbilitySystemComponent.h
Called when ability fails to activate, passes along the failed ability and a tag explaining why
typedef TMulticastDelegate_TwoParams< void, const [UGameplayAbility](API\Plugins\GameplayAbilities\Abilities\UGameplayAbility) *, const [FGameplayTagContainer](API\Runtime\GameplayTags\FGameplayTagContainer) & > FAbilityFailedDelegate